5 months ago
Q:

7(9x7)-4(5x8)=

Accepted Solution

A:
Multiply and divide (left to right) $ 7\times 63 :{\quad}441$
$=441-4\times 40$
Follow the PEMDAS order of operations
$=7\times 63-4(5\times 8)$ $=441-4\times 40$
Multiply and divide (left to right) $ 4\times 40 :{\quad}160$
$=441-160$
Calculate within parentheses $ (5\times 8) :{\quad}40$
$=40$ $=441-160$
Add and subtract (left to right) $ 441-160 :{\quad}281$
$=281$
Calculate within parentheses $ (9\times 7) :{\quad}63$
$=63$ $=7\times 63-4\times 40$ $=281$